Early network Bridges, protocol converters, and routers were simple dedicated hardware units typically configured through a terminal directly connected to a serial port on the unit itself.

The vehicle information has a new and unified encapsulation by adopting the middleware. And a higher communication protocol is adopted between the middleware and the customer terminal.

This paper introduces the design of IP Phone terminal using SIP (Session Initiation Protocol) upon the OMAP5912 platform of a vehicle electronic multi-media video and audio system.